Previously, the editor has introduced in detail the regular inspection items for high-efficiency and energy-saving motors. It can be seen that the inspection items for this motor include: cleaning and wiping the motor in time, installing the rear end cover before assembling the motor, carefully feeding the rotor into the stator, and then closing it. Turn the rear end cover and the rotor of the high-efficiency and energy-saving motor to check whether it rotates flexibly and whether the sweep is loose. What I want to introduce today is the rust removal method for high-efficiency and energy-saving motors. I hope you can use it after reading it!
High-efficiency and energy-saving motors refer to motors with high efficiency and are also green and environmentally friendly motors. High-efficiency motors use new motor designs to improve their output efficiency by reducing the loss of electromagnetic energy, thermal energy and mechanical energy. The structure of this motor is relatively simple and durable.
The energy-saving effect of high-efficiency and energy-saving motors is relatively obvious. Under normal circumstances, its efficiency can be increased by about 3%-5%. Super-efficiency motors are even more efficient. It can be seen that improving motor efficiency, reducing motor energy consumption, and developing and promoting the application of efficient and ultra-efficient motors have very important national energy strategic significance and realistic social benefits.
However, once corrosion is found on the parts of high-efficiency and energy-saving motors, they should be removed from rust. At present, the main rust removal methods for high-efficiency and energy-saving motors include mechanical methods and chemical methods.
1. Mechanical rust removal method
Mechanical rust removal is a method that uses machinery and some simple tools to remove rust spots under the action of force. When the rust layer is relatively shallow, emery cloth can be used for polishing. The appropriate thickness of emery cloth should be selected according to the required surface roughness of the part to be polished, so as not to damage the accuracy.
When using emery cloth for grinding, the grinding direction should be as consistent as possible with the original machining and turning direction. For parts that require high dimensional accuracy (such as the diameter of the shaft extension and the bearing gear), attention should be paid to the control of the grinding amount to prevent scraps caused by excessive grinding that exceeds the size or forms the allowable tolerance range.
For motors with thick rust layers and complex shapes, it is not advisable to use simple tools such as sandpaper to remove them. At the same time, for parts with loose size requirements, scrapers, files, grinding wheels and other tools can be used to clean them according to the situation.
Castings with severe corrosion can be treated with a shot blasting machine dedicated to the foundry.
2. Chemical rust removal method
The method of applying liquid "rust remover" to the rusted parts of high-efficiency and energy-saving motors and removing the rust under chemical action is called chemical rust removal. The advantage of this method is that it has little impact on the dimensional accuracy of the treated parts and is relatively labor-saving. However, it is limited to shallow rust layers, and some parts after rust removal will lose the original processed metal due to chemical reactions. luster.
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